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Common Stock and Per Share Information (Tables) | 12 Months Ended
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May 31, 2025
Earnings Per Share [Abstract] |
Schedule of Calculation of Numerator and Denominator in Earnings Per Share | The following table reconciles the numerators and denominators used in the calculations of basic and diluted EPS for each of the last three fiscal years:
(In millions, except shares) | 2025 |  | 2024 |  | 2023
Numerator: |  |  |  |  |
Numerator for both basic and diluted EPS, Net (loss) earnings attributable to MillerKnoll, Inc. | $ | (36.9) |  |  | $ | 82.3 |  |  | $ | 42.1 |
Denominator: |  |  |  |  |
Denominator for basic EPS, weighted-average common shares outstanding | 68,977,267 |  |  | 73,291,939 |  |  | 75,478,000 |
Potentially dilutive shares resulting from stock plans | — |  |  | 662,817 |  |  | 546,368 |
Denominator for diluted EPS | 68,977,267 |  |  | 73,954,756 |  |  | 76,024,368 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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